Optical Properties of Aqueous Solutions of Dimethyl Sulfoxide and Application of Refractometry for Monitoring Their Composition

Akmarov, K. A.; Лапшов, С. Н.; Шерстобитова, А. С.; Yaskov, A. D.

doi:10.1007/s10812-013-9814-4

Cited by 6 publications

(2 citation statements)

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“…We have analyzed the noise spectra for six materials commonly used to cover the surface of NV center diamonds: glycerol, propylene carbonate, polymethyl methacrylate, polyvinylindene flouride, perflouropolyether, and dimethyl sulfoxide. The covering materials examined in this work all exhibit optical transparency in NV center experiments and do not interfere with NV center readout [54][55][56][57]. While chemical reactivity with biomolecules for sensing could possibly be affected by the coating, reduction in noise may more than compensate for this effect.…”

Section: Discussionmentioning

confidence: 99%

“…On the other hand, propylene carbonate and DMSO are aprotic solvents with tightly bound atoms and are optically transparent in the wavelength regimes of NV center experiment. PMMA, PVDF, and PFPE are all nonreactive, thermally stable, and optically transparent [54][55][56][57]. PFPE has been used in space-based applications for its optical transparency, and PMMA acts like normal window glass only filtering out wavelengths below 300 nm.…”

Section: A Noise Spectrummentioning

confidence: 99%

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Electric Noise Spectra of a Near-Surface Nitrogen-Vacancy Center in Diamond with a Protective Layer

2018

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Surface noise is a detrimental issue for sensing devices based on shallow nitrogen vacancy (NV) color center diamonds. A recent experiment indicates that electric field noise is significant compared to magnetic field noise. They also found that the electric field noise can be reduced with a protective surface layer, though the mechanism of noise reduction is not well understood. We examine the effect of a protective surface layer on the noise spectrum, which is caused by surface charge fluctuations. We use the fluctuation-dissipation theorem to calculate and analyze the noise spectrum for six different surface layer materials typically used for NV center diamond devices. We find that four parameters largely affect the noise spectrum: effective relaxation time, effective loss tangent, power law exponent of the noise spectrum, and layer thickness. Our results suggest that a surface covering layer is indeed useful for decreasing surface noise, but which material is most suitable depends on the device operational frequency range.

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Section: Discussionmentioning

confidence: 99%